Luna Moth Double Walled Glass Mug with crystal tea infuserSip your tea in style with this glass mug with a double walled design to provide insulation and to ensure beverages stay hot or cold. The mug features an elegant luna moth design and comes with a clear quartz crystal tea infuser to allow loose leaf tea to steep naturally while infusing your water with the soothing energy of the clear quartz. Please pre warm mug with warm water before adding hot water. Avoid sudden changes in temperature.